The Department of Defense, through the Department of the Navy's NAVSUP Weapon Systems Support, is seeking proposals for the procurement of 10 units of the flight-critical item identified by NSN 7R-1680-016547405-E9, titled "PROP MOD ASSY, SHIEL." Due to the lack of available technical data and the necessity for Government source approval prior to contract award, only previously approved sources will be considered for this solicitation. This item is essential for maintaining operational readiness, and the procurement process emphasizes the importance of compliance with the Source Approval Information Brochures provided by NAVSUP WSS. Interested parties must submit their proposals, including all required documentation, to Sophia J. Noel at SOPHIA.NOEL@NAVY.MIL, with the understanding that failure to provide the necessary information may result in disqualification from the award process.